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re lye gravey

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homer

08-28-2004 21:42:27




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Couldn`nt make the lye gravey work.The corn sta rch got lumpy and even turned into one hunk of shoe leather when I put lye in. Went and got dirt in a plastic pail .Made about 1 gallon of runy mud and put in one container of red devil lye from the grocery store and mixed it up.the lye made it alittle thicker when added.The mud was about lke painting on thick latex house paint.also found out you got to be patient and give it about 3 hrs to do it`s job.May even hve to mist it a few times w/water.Real humd today so it stayed prety wet.Did`nt look like it did anything.Does`nt wrinkle paint up like stripper but when I went to spray the mud off it took 98% of the paint off right down to the iron. Did`nt think much of lye gravey at 1st now I think its the best thing ever.Bet I could srip the whole tractor right down to bare metal for 20 bucks.

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F-I-T

09-01-2004 18:16:44




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 Re: re lye gravey in reply to homer, 08-28-2004 21:42:27  
Homer:

I think you might be using too much corn starch. When I add corn starch, I say add it one tablespoon at a time. I like to wisk it in cool water, and add that and mix it in, wait several minutes, then add another only if needed. The recipe for adding the corn starch is strictly dependent on how much water you initially added. The starch is added only to thicken the water.

On the lye, the only Red Devil can I have ever found is the 18 oz, so that"s the size I meant. I add enough water to dissolve one 18 oz can of Red Devil lye. If you have lye crystals in the bottom, you need a tad more water. Once the lye is dissolved, add some of your cool water wisked corn starch. ADD IT SLOWLY. The goal is to end with the mixture still a bit runny because as the starch continues to bloom up it gets stiffer. If it stiffens, add more water. Once you get the hang of it, you"ll never look at the directions. I mix it up a quart at a time, and add the starch a bit at a time, but never too much. It should take a few minutes to thicken, but not right away. Getting stiff right away is a sign you"ll have to add some water.

On the cost. I don"t know the prices of corn starch in your area, but the box I have here says 89c, and the Lye I get for $4.00, and I think that it make more than a gallon...in fact I think much more. I tried for 20 years to buy Easy-Off at a decent price, but around here it runs $3.00 anytime if not even more than that.

I have been experimenting lately using the lye/water with just a smidgeon of corn starch and apply it with a garden sprayer, and it"s been working pretty well, but the pasty lye gravy still sticks and works better on stubborn paints and grease.

Hope this helps!

Frank Boerger
A.K.A. Frank-in-Tallahassee
70D // 855 // VAC // IHC “Cub”
frank@fboerger.com

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Dozerboss

09-02-2004 10:16:11




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 Re: re lye gravey in reply to F-I-T, 09-01-2004 18:16:44  
Frank, I based my prices on the local grocery and hardware store. Some people have dollar and discount stores to get these products, even the oven cleaner cheaper.

I'm glad the 18 oz was correct and my guess didn't steer anybody who tried it wrong. Thanks for putting it up, it has it's place in the restoration world, and something I would like to experiment with too.



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msb

08-29-2004 12:15:47




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 Re: re lye gravey in reply to homer, 08-28-2004 21:42:27  
What we need is someone to come up with an exact receipe. My first batch works pretty good although I found 1 pound of corn starch is too much for an 18 oz. can of lye.I am thinking 1/2-3/4 of a pound might be closer.I mixed the lye in about 2 cups of water and then mixed the starch in a coffee cup to the point of putting in only enough starch that could bw easily mixed up and kept doing this until I got the amount of starch I wanted.Then I put the starch in with the lye solution.Then I finished filling the container with water for about a total of 1 gallon of mixture.I then used a power stirrer on an electric drill to mix it all together.(Churn it up real good).

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msb

08-29-2004 12:15:38




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 Re: re lye gravey in reply to homer, 08-28-2004 21:42:27  
What we need is someone to come up with an exact receipe. My first batch works pretty good although I found 1 pound of corn starch is too much for an 18 oz. can of lye.I am thinking 1/2-3/4 of a pound might be closer.I mixed the lye in about 2 cups of water and then mixed the starch in a coffee cup to the point of putting in only enough starch that could bw easily mixed up and kept doing this until I got the amount of starch I wanted.Then I put the starch in with the lye solution.Then I finished filling the container with water for about a total of 1 gallon of mixture.I then used a power stirrer on an electric drill to mix it all together.(Churn it up real good).

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ol' guy

08-29-2004 08:31:58




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 Re: re lye gravey in reply to homer, 08-28-2004 21:42:27  
i read all the postings and still don"t know how to make lye gravy that works good. i mixed some up 6 months back and use it from time to time, but it"s slow and not near as good as "easy-off oven cleaner"
Would someone who"se had good luck tell me just how to mix it, like how much corn starch per gallon of lye solution?? thanks for the help.



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Dozerboss

08-29-2004 12:26:05




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 Re: re lye gravey in reply to ol' guy, 08-29-2004 08:31:58  
Just wondering about the easy off oven cleaner. I have read posts from folks who use that, quite a few. The wife says its $2.50 to $3.00 a can @ 16 oz. 8 cans makes 1 gallon at $20 if bought for $2.50. So that would not be cheaper than buying a $20 gallon of aircraft quality stripper.

It Would have to be on sale or a cheaper store brand or bought at a surplus place like Big lots. Thats where products that have expired their shelf life end up after other stores and supermarkets pull them from their shelves, including paint and cleaners.

Following the recipe from fboerger it adds up to about 112 ounces before it's boiled and some evaporates and cooks off. Plus the can of lye-- for which he doesn't give the size. The red devil lye i have seen is for opening drains and is 18 oz for $7, he is adding 24 tablespoons of corn starch in his recipe which is 12 oz. Nearly one 16 oz box of corn starch--a couple of bucks. The wife says if the corn starch were mixed with a wisk in the 12 cups of water it would not turn out lumpy. The yield with this mix would be 130 oz less what boiled off. 1 gallon is 128 oz. You have the cost of lye, corn starch, and the energy to boil the mixture, and cleanup the pot. Plus your time to cook and mix if that is a factor. About $10 a gallon for ingrediants only if the lye content is correct @ 18 0z.

You were asking about a mixture with 1 gallon of lye solution. I'm assuming thats mixed with the other ingrediants--if so, 24 tablespoons is right, If the above formula is right @ 18 oz of lye.

Just for fun-- a mix with one gallon of lye itself following the above recipe, would yield about 7 gallons of stripper. Just guessing again, the 18 oz at $7 seems right in order to make stripper that is cheaper than store bought.

The strippers below aircraft quality are less $ but really designed for house paint and not as effective. It would depend on how good the lye works to determine if its worth the effort--aircraft performance or home latex paint performance?

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CNKS

08-29-2004 14:09:56




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 Re: re lye gravey in reply to Dozerboss, 08-29-2004 12:26:05  
Dollar Stores have oven cleaner in brands other than Easy Off--all it is sodium hydroxide (don't buy it unless it says it is sodium hydroxide, the odorless stuff is too weak), so is lye, in the granular form. I use oven cleaner or paint stripper, sometimes both. Oven cleaner mainly for oil and grease, stripper for paint. There is no combination that will take everything off in one shot. An angle grinder/drill with a wire brush takes care of the rest of it. The cast needs to be roughed up before painting, anyway.

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Dozerboss

08-29-2004 15:39:47




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 Re: re lye gravey in reply to CNKS, 08-29-2004 14:09:56  
I'm a cheater with oil and grease. Don't like it on any of my engines or anywhere else. I bought a pressure washer on surplus. Discovered why it was surplus the first time out--16 horsepower briggs and stratton V twin is too powerful for the pump. You need an extra man to hold the trigger open on the gun to crank it, otherwise the pump locks it up. The flaw in a direct drive type vs belt drive. The walmart degreaser @ .79 a can works good when you have a washer. Now that i'm ahead of it i can simply mix dish detergent with a couple gallons of water every couple of months for engines. The washer will draw it from the bucket and it will blanket everything with suds and keep grease off. I use that method for washing before paint too, before wax and grease wipe down.

Sounds like oven cleaner would work good on a diesel with buildup or hydralic oil with dirt build up from something leaking a long time and baked by heat.

Used the aircraft stripper yet? I have a project to try it on, that keeps getting pushed back. I have used the liquid type, but can't get it local so it's about $10 more with shipping.

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homer

08-29-2004 08:47:12




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 Re: re lye gravey in reply to ol' guy, 08-29-2004 08:31:58  
Try 1 gallon mud to one container lye.mix the mud fairly runny it will thicken some.paint on with a big paint brush.it takes longer to work than other stripper but with about 3 hrs time it takes everything off.It realy works good.Whats to loose 3.50 for the lye.Mud not that bad even at todays land prices. Thanks homer.



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Dozerboss

08-28-2004 22:07:16




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 Re: re lye gravey in reply to homer, 08-28-2004 21:42:27  
Did you use the recipe from www.fboerger.com ?



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homer

08-29-2004 07:33:24




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 Re: re lye gravey in reply to Dozerboss, 08-28-2004 22:07:16  
Yes but this was`nt as hard to get right .Did`nt have lump trouble.It worked so good I don`nt know why I would do it any other way and the mud was cheaper still.Thankful for the fboerger article though or I would be using store stripper at 5 times the price and no where near as good.Cant believe how that lye takes off all those layers if you just let it work. thanks Homer.



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